久久国产欧美日韩精品,日韩国产精品久久久久久亚洲,99视频精品全部免费免费,91精品国产综合久久走光

“變堅固”的英語可以翻譯為：[醫(yī)]harden，indurate，strengthen ...

唐: 是的.在它變堅固之前我們必須禁止人們在這上面走過.TANG: Yes, and we must stop people walking on this floor until it's firm....